刚知道 Dropbox 也可以 ignore 文件了，分享一下

官方原文链接： https://help.dropbox.com/zh-cn/files-folders/restore-delete/ignored-files

windows:

Set-Content -Path 'C:\Users\yourname\Dropbox(Personal)\YourFileName.pdf' -Stream com.dropbox.ignored -Value 1

Mac

xattr -w com.dropbox.ignored 1 /Users/yourname/Dropbox\ \(Personal\)/YourFileName.pdf

Linux

attr -s com.dropbox.ignored -V 1 /Users/yourname/Dropbox\ \(Personal\)/YourFileName.pdf